Water block

Abstract

The present invention provides a water block, comprising: a heat absorption space for filling a working medium therein; a heat transfer structure disposed on a base and located in the heat absorption space for transferring the heat energy generated by a heat source in contact with the base to the working medium; and a flow guiding structure located in the heat absorption space for guiding the flow of the working medium. The flow guiding structure of the water block of the present invention can effectively improve the efficiency of the working medium in adsorbing heat energy.

Description

Technical Field

[0001] The invention relates to the field of heat dissipation, and in particular to a water cooling head. Background Art

[0002] In response to modern needs, computers and various electronic devices are developing rapidly and their performance is constantly improving. However, in the process, the heat dissipation problem brought by high-performance hardware also comes along. Generally speaking, computers and various electronic devices usually use heat dissipation components to dissipate heat, such as using thermal paste or heat sinks to attach to the electronic components to be dissipated to absorb and dissipate the heat. However, this heat dissipation method has limited effect, so a heat dissipation module using liquid cooling has been developed.

[0003] Existing heat dissipation modules using liquid cooling generally use coolant to absorb heat energy. For example, the coolant fluid is connected to the electronic components to be cooled. The heated coolant can flow to a lower temperature for heat exchange. After the heat exchange, the coolant can flow to the electronic components to be cooled to absorb heat energy, thus forming a heat dissipation cycle.

[0004] However, when the existing heat dissipation module transports the coolant to the space in the electronic component to be cooled for absorbing heat energy, the coolant is often affected by the pump suction because the pump is located above the space for absorbing heat energy. The coolant cannot effectively move to the space for absorbing heat energy closer to the electronic component to be cooled (such as the gap between fins), resulting in poor efficiency of the coolant in absorbing heat energy and being unable to effectively remove the heat energy.

[0005] Therefore, how to provide a water cooling head that can solve the above problems is one of the issues that the industry needs to solve urgently. Summary of the invention

[0006] An object of the present invention is to provide a water cooling head which can effectively improve the efficiency of the working medium in absorbing heat energy.

[0007] The water cooling head of the present invention comprises: a shell; a base, which is combined with the shell to form an action space for a working medium to flow therein; a heat transfer structure, which is arranged on the inner side of the base and is used to transfer the heat energy generated by a heat source in contact with the outer side of the base to the working medium in the action space via a path formed by the base and the heat transfer structure; a pump, which is arranged above the heat transfer structure and is used to separate the action space into a heat absorption space and a drainage space to drive the working medium to flow from the heat absorption space to the drainage space; and a guide structure, which is arranged in the heat absorption space to guide the working medium.

[0008] In the aforementioned water cooling head, the flow guiding structure comprises a flow guiding frame, and the flow guiding frame is composed of a top and two side walls vertically extending from two ends of the top.

[0009] In the foregoing water block, a groove is formed around the heat transfer structure disposed inside the base for the two side walls to be engaged with the groove.

[0010] In the foregoing water block, the groove has a positioning recess, and the side wall has a positioning protrusion for engaging with the positioning recess.

[0011] In the foregoing water block, the setting directions of the positioning recess and the positioning protrusion are perpendicular to the flow direction of the working medium.

[0012] In the foregoing water block, the flow guiding structure further includes a blocking block for reducing the time for the working medium to stay at the edge of the heat absorption space.

[0013] In the foregoing water block, the blocking block includes a top piece and two side columns vertically extending from two ends of the top piece, and the two side columns are engaged in the groove.

[0014] In the foregoing water block, the groove has a positioning recess, and the side column has a positioning protrusion for engaging with the positioning recess.

[0015] In the foregoing water block, the setting directions of the positioning recess and the positioning protrusion are perpendicular to the flow direction of the working medium.

[0016] In the foregoing water block, at least one guiding inclined surface is formed on the side of the top piece of the blocking block facing the inside of the base and adjacent to the heat transfer structure.

[0017] In the foregoing water block, the flow guiding frame connects the blocking block through at least one connecting portion, and the flow guiding frame, the blocking block and the connecting portion jointly define an opening located below the pump.

[0018] In the foregoing water block, the flow guiding frame, the blocking block and the connecting portion are integrally formed.

[0019] In the foregoing water block, at least one guiding inclined surface is provided at the edge of the top portion facing the heat transfer structure.

[0020] In the foregoing water block, at least one notch is provided at the edge of the top portion facing the heat transfer structure.

[0021] In the foregoing water block, at least one boundary layer destruction structure for reducing the flow pressure of the fluid is provided inside the top portion facing the heat transfer structure.

[0022] In the foregoing water block, the forming direction of the boundary layer destruction structure is perpendicular or horizontal to the flow direction of the working medium.

[0023] In the foregoing water block, the boundary layer destruction structure is a groove.

[0024] In the foregoing water block, the guiding structure is disposed above a part of the heat transfer structure, and the pump is disposed above another part of the heat transfer structure.

[0025] In the foregoing water block, the guiding structure is a bump structure extending from the housing to the heat transfer structure.

[0026] In the foregoing water block, the guiding structure is an extension structure of the heat transfer structure, so that the height of the heat transfer structure is close to the inner side of the housing.

[0027] Another object of the present invention is to provide a water block, including: a heat absorption space for a working medium to flow therein; a heat transfer structure disposed on a base and located in the heat absorption space for transferring heat energy generated by a heat source in contact with the base to the working medium; and a guiding structure disposed above a part of the heat transfer structure and located in the heat absorption space for guiding the working medium.

[0028] In the foregoing water block, a groove is formed around the heat transfer structure.

[0029] In the foregoing water block, the guiding structure includes a guiding frame, the guiding frame includes a top portion and two side walls vertically extending from two ends of the top portion, and wherein, the two side walls are clamped in the groove.

[0030] In the foregoing water block, the guiding structure further includes a blocking block, the blocking block includes a top member and two side columns vertically extending from two ends of the top member, and wherein, the two side columns are clamped in the groove.

[0031] In the foregoing water block, the groove has a first positioning concave portion for engaging a first positioning convex portion of the side wall, and a second positioning concave portion for engaging a second positioning convex portion of the side column.

[0032] In the foregoing water block, the setting direction of the first positioning concave portion and the first positioning convex portion is perpendicular to the flow direction of the working medium, and wherein, the setting direction of the second positioning concave portion and the second positioning convex portion is perpendicular to the flow direction of the working medium.

[0033] In the foregoing water block, at least one guiding inclined surface is provided on the side surface of the top member.

[0034] In the foregoing water block, the guiding frame connects the blocking block through at least one connecting portion.

[0035] In the foregoing water block, the guiding frame, the blocking block and the connecting portion are integrally formed.

[0036] In the foregoing water block, at least one guiding inclined surface or notch is provided on the edge of the top portion.

[0037] In the foregoing water block, at least one boundary layer disruption structure is provided on the inner side of the top.

[0038] In the foregoing water block, the formation direction of the boundary layer disruption structure is perpendicular or horizontal to the flow direction of the working medium.

[0039] In the foregoing water block, the boundary layer disruption structure is a groove.

[0040] In the foregoing water block, the guiding structure is a bump structure extending from the housing above the heat transfer structure to the heat transfer structure.

[0041] In the foregoing water block, the guiding structure is an extended structure of the heat transfer structure, so that the height of the heat transfer structure is close to the inner side of the housing above the heat transfer structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a schematic diagram of the water block of the present invention;

[0043] Figure 2 is Figure 1 an exploded schematic diagram of;

[0044] Figure 3A is Figure 1 a schematic cross-sectional view along the section line 3A-3A in;

[0045] Figure 3B is Figure 1 a schematic cross-sectional view along the section line 3A-3A in and drawn with the flow direction of the working medium;

[0046] Figure 4A and Figure 4B are schematic diagrams of different perspectives of the pump in the water block of the present invention;

[0047] Figures 5A to 5C are schematic diagrams of different perspectives of the flow direction of the working medium in the water block of the present invention;

[0048] Figure 6A , Figure 6D and Figure 6E are schematic diagrams of different perspectives of the guiding structure and the base combined in the water block of the present invention;

[0049] Figure 6B is Figure 6A an exploded schematic diagram of;

[0050] Figure 6C are schematic diagrams of different perspectives of the guiding structure in the water block of the present invention;

[0051] Figure 6F and Figure 6G are schematic diagrams of different embodiments of the guiding structure in the water block of the present invention;

[0052] Figure 7A Schematic cross-sectional views of different embodiments of the flow guiding structure in the water block of the present invention;

[0053] Figure 7B are Figure 7A schematic views from different perspectives of;

[0054] Figure 7C are Figure 7A schematic views of the flow guiding structure in;

[0055] Figure 7D Schematic view of the combination of the flow guiding structure in the water block of the present invention and the base;

[0056] Figure 7E are Figure 7D explosion schematic views of;

[0057] Figure 8A Schematic view of another embodiment of the flow guiding structure in the water block of the present invention;

[0058] Figure 8B are Figure 8A explosion schematic views of;

[0059] Figure 8C are Figure 8A schematic views of the flow guiding structure in;

[0060] Figure 9 Schematic view of yet another embodiment of the flow guiding structure in the water block of the present invention; and

[0061] Figure 10 Schematic view of another embodiment of the flow guiding structure in the water block of the present invention.

[0062] Among them, the reference numerals are explained as follows:

[0063] 1 Water block 10 Connection part

[0064] 11 Gasket 11A Opening

[0065] 2 Housing 21 Electro-mechanical chamber

[0066] 22 Water inlet channel 23 Drainage channel

[0067] 24 Liquid injection channel 25 Water inlet joint

[0068] 26 Drainage joint 27 Accommodating groove

[0069] 28 Groove 29 Protrusion structure

[0070] 3 Outer cover 4 Base

[0071] 41 Heat absorption surface 42 Heat transfer structure

[0072] 43 Inner side 44 Groove

[0073] 44A First positioning recess 44B Second positioning recess

[0074] 5 Pump 51 Circuit board

[0075] 52 First magnetic element 53 Fan blade

[0076] 531 Top wall 532 Chassis

[0077] 533 Partition wall 534 Bush

[0078] 535 Shaft rod 536 Hollow part

[0079] 537 Rib 538 Drainage cavity

[0080] 539 Fixing part 5391 Blind hole

[0081] 54 Second magnetic element 6 Flow guide frame

[0082] 61 Top 61A Notch

[0083] 61A1 Guide slope 61B, 61C Groove

[0084] 62, 63 Side wall 63A First positioning protrusion

[0085] 65, 66 Guide slope 7 Action space

[0086] 71 Heat absorption space 711 Rotating space

[0087] 72 Drainage space 8 Fastening device

[0088] 9 Blocking block 91 Top piece

[0089] 91A Guide slope 92, 93 Side column

[0090] 93A Second positioning protrusion. Detailed implementation manners

[0091] The implementation manners of the present invention are hereinafter described by specific specific embodiments. Those skilled in the art can easily understand other advantages and technical effects of the present invention from the content disclosed in this specification, and can also implement or apply it through other different specific embodiments.

[0092] The water block provided by the present invention can be installed in electronic devices such as computer hosts or servers. The interior of the water block can be filled with a working medium (such as a coolant), and this working medium can absorb the heat energy generated by a heat source (such as electronic components like chips or memories). The heated working medium can be transferred to a condensation device for cooling, and the cooled working medium can then be returned to the water block to perform the next heat absorption and circulating flow.

[0093] Please refer to Figure 1 , Figure 2 , Figure 3A and Figure 3B , the water block 1 of the present invention may include a housing 2, a cover 3, a base 4, and a pump 5. The housing 2 can serve as the main structural component of the water block 1. Its upper part is combined with the cover 3, its lower part is combined with the base 4, and its side can be combined with a water inlet joint 25 and a drain joint 26. The combination of the above-mentioned housing 2 and various components can form fixing structures such as screw holes or studs at different parts of the housing 2, so as to facilitate the combination of the cover 3, the base 4, the water inlet joint 25, or the drain joint 26 by means of locking during assembly. However, the present invention is not limited to this combination method.

[0094] In this embodiment, the housing 2 can structurally define different chambers and channels, including an electromechanical chamber 21, a water inlet channel 22, a drain channel 23, and a liquid injection channel 24, etc. Among them, the electromechanical chamber 21 opens on the top side of the housing 2 and faces the cover 3, and the electromechanical chamber 21 is independent of the flow path of the working medium in the water block 1, so that the energized components arranged in the electromechanical chamber 21 can be protected to avoid short-circuit situations caused by the intervention of the working medium.

[0095] In this embodiment, the pump 5 may include a circuit board 51, a first magnetic element 52, a fan blade 53, and a second magnetic member 54. Among them, the circuit board 51 and the first magnetic element 52 may be disposed within the electromechanical chamber 21, while the fan blade 53 and the second magnetic element 54 are disposed on the other side of the electromechanical chamber 21 (for example, within the path through which the working medium flows). And, the circuit board 51 is used to provide the power required for the operation of the pump 5. For example, it is connected to a power source (not shown in the figure) by means of a wired connection using wires, or by other wireless connection methods such as electromagnetic induction. In this embodiment, the circuit board 51 and the first magnetic unit 52 are separated from the fan blade 53 and the second magnetic element 54 by the housing 2, but the first magnetic element 52 and the second magnetic element 54 are still coaxially arranged. In one embodiment, the first magnetic element 52 and the second magnetic element 54 may be selected from magnets or other materials that can be driven or attracted by a magnetic field. In addition, the second magnetic element 54 is combined with the fan blade 53. When the pump 5 is powered on, under the combined action of the circuit board 51, the first magnetic element 52, and the second magnetic element 54, the fan blade 53 connected to the second magnetic element 54 can be driven to rotate, and then the working medium can be guided to generate a flow.

[0096] In this embodiment, the base 4 is used to absorb heat energy, and its material may be selected from metals or other materials with good thermal conductivity. The base 4 may be a one-piece (integrally formed) structure in terms of structure, or a composite structure composed of multiple layers or multiple elements. The present invention is not limited thereto. The outer side (the side away from the housing 2) of the base 4 has a heat absorption surface 41, and a heat transfer structure 42 is formed (or can be provided) on the inner side 43 (the side facing the housing 2) of the base 4. Among them, the heat absorption surface 41 can be in direct or indirect contact with the heat source, so that after the heat absorption surface 41 absorbs the heat energy generated by the heat source, the heat energy is transferred to the heat transfer structure 42, and the heat transfer structure 42 will then transfer the heat energy to the working medium through contact with the working medium (not shown in the figure).

[0097] In one embodiment, the heat transfer structure 42 of the base 4 may be a skived fin, or fins in other columnar, sheet-like, or even irregular shapes, as long as it can increase the contact area with the working medium and allow the heat energy to be transferred to the working medium faster. The present invention does not limit the specific structure of the heat transfer structure 42.

[0098] In one embodiment, the water block 1 can be fixed to the heat source (such as a heat-generating electronic component, etc.) by means of a buckle 8 located at the outer edge of the housing 2 and adjacent to the base 4. However, the present invention does not limit the way in which the water block 1 is fixed to the heat source.

[0099] Please refer to again Figure 3A and Figure 3B, after the base 4 is combined with the housing 2, the housing 2 and the base 4 together can define an operating space 7, which can be filled with a working medium and allow the working medium to flow. In an embodiment, the operating space 7 can be partitioned by the impeller 53 of the pump 5 into a heat absorption space 71 and a drainage space 72, without relying on other partition walls or compartments and other components, thus simplifying the internal structure of the water-cooling head 1. In this embodiment, the water inlet passage 22 of the housing 2 communicates with the heat absorption space 71 to allow the cooled working medium to flow into the heat absorption space 71, so that the working medium absorbs the heat energy transferred by the heat transfer structure 42. The impeller 53 can directly suck the working medium from the heat absorption space 71 to the drainage space 72. In addition, the drainage passage 23 communicates with the drainage space 72, so the heated working medium can be transferred to the outside of the water-cooling head 1 for cooling. Furthermore, the water inlet passage 22 and the drainage passage 23 can extend outward or connect to the water inlet joint 25 and the drainage joint 26 respectively, and the water inlet joint 25 and the drainage joint 26 are then connected to a condensation device (such as a water-cooling radiator, a fan, etc.) through a pipeline (not shown). The water inlet joint 25 and the drainage joint 26 can be connected to the housing 2 vertically or horizontally, or an elbow can be provided to meet the different space configuration requirements inside the water-cooling head 1, and the present invention is not limited thereto.

[0100] The overall structure of the impeller 53 of the pump 5 in the water-cooling head 1 of the present invention will be further described below. Please also refer to Figure 4A and Figure 4BAs described above, the working space 7 in the water block 1 of the present invention is partitioned into a heat absorption space 71 and a drainage space 72 by the fan blade 53 of the pump 5. Therefore, the fan blade 53 itself has the dual functions of sucking and discharging the working medium. To achieve the above functions, the fan blade 53 is disposed in the working space 7 and adjacent to the drainage channel 23, so as to directly suck the working medium from the heat absorption space 71 into the drainage space 72, and then discharge the working medium out of the water block 1 through the drainage channel 23. The fan blade 53 includes a top wall 531, a bottom chassis 532, a partition wall 533, a bushing 534 and a shaft rod 535. A hollow portion 536 is formed between the bottom chassis 532 and the bushing 534, and the bottom chassis 532 and the bushing 534 can be connected by at least one rib 537 in the hollow portion 536. The bottom chassis 532 is the main structure in the fan blade 53 that partitions the working space 7 into a heat absorption space 71 and a drainage space 72, and the heat absorption space 71 and the drainage space 72 are fluidly coupled through the hollow portion 536, that is, the working medium can enter the drainage space 72 from the heat absorption space 71 through the hollow portion 536. The top wall 531 and the bottom chassis 532 are spaced apart, and a plurality of partition walls 533 are connected therebetween, so that a plurality of drainage cavities 538 can be partitioned. When the working medium is transferred upward from the heat absorption space 71 to the drainage space 72 through the hollow portion 536, the working medium will first touch the top wall 531 and then turn, and move toward each drainage cavity 538, and then due to the action of centrifugal force, the working medium in each drainage cavity 538 will be sequentially thrown into the drainage channel 23 and then discharged out of the water block 1. In addition to the guiding function of changing the flow direction, the top wall 531 of the fan blade 53 can also prevent the partition wall 533 from directly touching the housing 2, reducing the chance of wear.

[0101] In this embodiment, the fan blade 53 is driven by the electromagnetic induction between the first magnetic element 52 and the second magnetic element 54, rather than being driven by the shaft rod 535. Therefore, there is no interlocking relationship between the fan blade 53 and the shaft rod 535. However, in order to maintain the durability and stability of the fan blade 53, so that it will not be off-axis or touch the housing 2 and cause wear during rotation, a hollow-structured bushing 534 can be provided inside the fan blade 53 for the shaft rod 535 to be sleeved. In addition, in order to fix the shaft rod 535, one end of the shaft rod 535 can be received in the receiving groove 27 at the top of the working space 7 (that is, the inner side of the housing 2), and the other end can be fixed by a fixing member 539. The fixing member 539 has a blind hole 5391 (or a through hole) for the shaft rod 535 to be mounted. In addition, the fixing member 539 can be received and fixed in a groove 28 on the bottom surface of the housing 2 (such as Figure 5CAs shown, or the fixing member 539 is directly installed on the base, and the present invention is not limited thereto. In one embodiment, when the shaft rod 535 is installed in the acting space 7, preferably, it extends or penetrates into the heat absorption space 71 together with the fixing member 539, which will make the fan blade 53 more stable when rotating, but the present invention is not limited thereto.

[0102] In one embodiment, considering the material of the fan blade 53 itself, if necessary, a shaft tube (not shown in the figure) can be further sleeved and fixed in the shaft sleeve 534. This shaft tube is coaxially arranged with the shaft sleeve 534 and the shaft rod 535 and is located between the shaft sleeve 534 and the shaft rod 535. The material of the shaft tube can be selected from wear-resistant or relatively wear-resistant materials, so as to reduce the wear between the fan blade 53 and the shaft rod 535 during relative rotation and extend the service life of the fan blade 53.

[0103] In this embodiment, the water cooling head 1 can further include a flow guiding structure for guiding the working medium in the heat absorption space 71. The flow guiding structure described in the present invention can be specifically realized by several structures. One of them is the flow guiding frame 6 as shown in Figure 3A , Figure 3B , Figures 6A to 6G ; others such as the design of the convex block structure 29 as shown in Figure 9 or the design of the height change of the heat transfer structure 42 as shown in Figure 10 . Taking the flow guiding structure as the flow guiding frame 6 as an example, the functions that the flow guiding frame 6 of the present invention can achieve are as follows (other flow guiding structures can also achieve the following functions):

[0104] 1. When the working medium flows into the heat absorption space 71 from the water inlet channel 22, since the flow guiding frame 6 is arranged in the gap or space between the housing 2 and the heat transfer structure 42, it can force the working medium to flow into the interior of the heat transfer structure 42 (for example, the gap between two adjacent fins), and then can smoothly take away the heat energy absorbed by the heat transfer structure 42. Due to the existence of the flow guiding frame 6, the problem that the working medium directly passes above the heat transfer structure 42 without flowing into the interior of the heat transfer structure 42 and cannot effectively take away the heat energy can be avoided.

[0105] 2. Through the guiding structure of the flow guiding frame 6 itself, the working medium can more easily enter the gap between two adjacent fins, and after the working medium leaves the gap between two adjacent fins, it can be more easily sucked by the fan blade 53.

[0106] 3. When there are dimensional tolerances or dimensional specifications change during the production process of the housing 2 and the heat transfer structure 42, the flow guide 6 with different dimensions, thicknesses, or shapes can be directly replaced to make up for it. In addition, since the flow guide 6 is structurally simpler than the housing 2 and the cost of its mold is also cheaper than that of the housing 2, when the water cooling head 1 changes its design or fine-tunes its dimensions, only the cheaper mold of the flow guide 6 needs to be remade, instead of remaking the more expensive mold of the housing 2, thus achieving the technical effect of cost savings.

[0107] Please also refer to Figures 5A to 5C which can show the flow direction of the working medium in the water cooling head when there is a flow guide 6. That is, after the working medium in the water cooling head 1 flows into from the water inlet channel 22, it flows between the flow guide 6 and the heat transfer structure 42 of the base 4, and then is adsorbed by the fan blade 53, and finally enters the drain channel 23 from the drain cavity 538 of the fan blade 53 during the whole process. First, after the working medium enters the working space 7 from the water inlet channel 22, it will be guided by the flow guide 6 and enter the interior of the heat transfer structure 42 along the direction of arrow A. Then, the working medium will flow through the heat transfer structure 42 in the flow guide 6 along the direction of arrow B and absorb its heat energy. After that, after the working medium leaves the heat transfer structure 42, it will turn upward and be sucked into the hollow part 536 of the fan blade 53, and then turn again under the guidance of the top wall 531 and enter the drain cavity 538, as shown by arrow C. Finally, the working medium will rotate with the drain cavity 538 and be thrown into the drain channel 23 to leave the water cooling head 1, as shown by arrow D.

[0108] In this embodiment, as Figure 3A 、 Figure 3B 、 Figure 5A 、 Figure 5B and Figure 5C shown, the flow guide 6 does not completely cover the heat transfer structure 42. That is, the flow guide 6 is only provided above a part of the heat transfer structure 42, and the other part of the heat transfer structure 42 without the flow guide 6 above can be used to set the pump 5, which is to ensure that after the working medium absorbs the heat energy of the heat transfer structure 42, it can be directly sucked into the hollow part 536 of the fan blade 53. The following further describes the specific technical content of the flow guide 6.

[0109] Please also refer to Figures 6A to 6E which shows the structural characteristics of the flow guide 6 and can illustrate how the flow guide 6 is combined with the base 4. In this embodiment, the base 4 can form the heat transfer structure 42 in a way of subsidence, so that the bottom of the heat transfer structure 42 is lower than the horizontal height of the inner side 43 of the base 4 in terms of horizontal height, and a groove 44 is formed around the heat transfer structure 42.

[0110] In this embodiment, the flow guide frame 6 includes a top portion 61 and two side walls 62, 63, and the side walls 62, 63 are respectively formed by vertically extending from two ends of the top portion 61. Therefore, the flow guide frame 6 can be an inverted U-shaped structure, but the present invention is not limited thereto. When the flow guide frame 6 is coupled to the base 4, the side walls 62, 63 will be engaged in the groove 44.

[0111] In one embodiment, a first positioning recess 44A can extend from the groove 44 of the base 4, and one of the side walls 62, 63 of the flow guide frame 6 (taking the side wall 63 as an example) also correspondingly extends a first positioning protrusion 63A. This first positioning protrusion 63A can be engaged in the first positioning recess 44A to increase the stability of the flow guide frame 6 coupled to the base 4.

[0112] In another embodiment, the arrangement (extension) direction of the first positioning recess 44A and the first positioning protrusion 63A is perpendicular to the flow direction of the working medium. In this way, when the first positioning protrusion 63A of the side wall 63 is engaged in the first positioning recess 44A of the groove 44, the relative sliding between the flow guide frame 6 and the base 4 can be effectively prevented.

[0113] In yet another embodiment, in order to make the working medium more easily enter the interior of the heat transfer structure 42, that is, enter the gap between two adjacent fins of the heat transfer structure 42, or be more easily sucked by the fan blade 53 after the working medium leaves the heat transfer structure 42, at least one guiding inclined surface 65, 66 (as Figures 6C to 6E shown) can be formed at the edge of the inner side (the side facing the heat transfer structure 42) of the top portion 61 of the flow guide frame 6 to reduce the resistance at the water inlet end and the water outlet end. In addition, if it is necessary in the product design to make the working medium flow concentratedly to certain parts (such as the central part) of the heat transfer structure 42, at least one notch 61A can also be formed on the top portion 61 as the case may be, and this notch 61A can further form a guiding inclined surface 61A1.

[0114] In one embodiment, as Figure 6F and Figure 6G shown, the inner side of the top portion 61 facing the heat transfer structure 42 has at least one boundary layer disruption structure for reducing the flow pressure of the fluid, and the boundary layer disruption structure can be grooves 61B, 61C. In this embodiment, the formation direction of the boundary layer disruption structure can be perpendicular or horizontal to the flow direction of the working medium. As Figure 6F shown, the formation direction of the groove 61B is perpendicular to the flow direction of the working medium. As Figure 6GAs shown, the forming direction of the groove 61C is horizontally parallel to the flow direction of the working medium. However, the present invention does not limit the forming direction and number of the grooves 61B and 61C, nor does it limit that the boundary layer disruption structure must be the embodiment of the grooves 61B and 61C. As long as a non-planar surface structure is formed on the inner side of the top 61 facing the heat transfer structure 42, it can be a boundary layer disruption structure, and those that can also achieve the purpose of reducing the fluid flow pressure all belong to this category.

[0115] Please refer to Figure 7A , the guide frame 6 of the water block 1 of the present invention can also be paired with a blocking block 9 to reduce the time for the working medium to stay at the edge of the heat absorption space 71. For example, it can block the working medium from entering the turning space 711 at the rear end of the heat absorption space 71 (as Figure 5C shown) and prevent the working medium from staying and swirling in this space, thereby further improving the efficiency of the fan blade 53 sucking in the working medium.

[0116] Please also refer to Figure 5C and Figure 7B , which respectively show the embodiments where the blocking block 9 is not provided and the blocking block 9 is provided in the water block 1. In the Figure 5C shown embodiment, at the bottom of the housing 2 of the water block 1, there is an arc-shaped space on one side of the fixing member 539. When the housing 2 and the base 4 are assembled together, this space becomes a turning space 711 at the edge in the heat absorption space 71, so that the working medium will stay and turn briefly in the turning space 711 and then be sucked upward by the chassis 532 of the fan blade 53 into the drainage space 72. However, considering that if the working medium stays in this turning space 711 for too long, it may reduce the efficiency of the water block 1 in removing heat energy. Therefore, in other embodiments of the present invention (such as Figure 7B shown), a blocking block 9 can be provided to fill the turning space 711, forcing the working medium to directly be sucked upward by the fan blade 53 along the direction of arrow C through the gap between the guide frame 6 and the blocking block 9 after flowing through the heat transfer structure 42, thereby reducing the chance of the working medium staying in the turning space 711. The following further describes the specific technical content of the blocking block 9.

[0117] Please also refer to Figures 7C to 7E , the blocking block 9 includes a top member 91 and two side columns 92 and 93. Among them, the top member 91 has an arc-shaped outer shape corresponding to the bottom of the housing 2, and the thickness of the top member 91 is approximately the relative distance between the housing 2 and the base 4 in the turning space 711. The two side columns 92 and 93 are respectively vertically extended from both ends of the top member 91, so the blocking block 9 can also be an inverted U-shaped structure, but the present invention is not limited thereto. When the guide frame 6 is combined with the base 4, the side columns 92 and 93 will be clamped in the groove 44.

[0118] In one embodiment, the groove 44 of the base 4 can extend to form a second positioning recess 44B, and one of the side columns 92 and 93 of the blocking block 9 (taking the side column 93 as an example) correspondingly extends a second positioning protrusion 93A. This second positioning protrusion 93A can be engaged in the second positioning recess 44B to increase the stability of the blocking block 9 combined with the base 4.

[0119] In another embodiment, the arrangement (extension) direction of the second positioning recess 44B and the second positioning protrusion 93A is perpendicular to the flow direction of the working medium. In this way, when the second positioning protrusion 93A of the side column 93 is engaged in the second positioning recess 44B of the groove 44, relative sliding between the blocking block 9 and the base 4 can be effectively prevented.

[0120] In yet another embodiment, on the inner side 43 of the top piece 91 of the blocking block 9 facing the base 4 and the side adjacent to the heat transfer structure 42, at least one guiding inclined surface 91A can be formed, so that when the working medium flows through the very end of the heat transfer structure 42, it can be flipped upward by means of the guiding inclined surface 91A. As Figure 7D shown, after the working medium flows through the heat transfer structure 42, it can, for example, flow along the direction of arrow C, then turn and flow upward through the gap between the flow guide frame 6 and the blocking block 9, and be sucked into the chassis 532 of the fan blade 53.

[0121] Please refer to Figures 8A to 8C , the top 61 of the flow guide frame 6 and the top piece 91 of the blocking block 9 of the water cooling head 1 of the present invention can be connected to each other through at least one connecting portion 10 to form an integrally formed design (such as forming a gasket 11 including the flow guide frame 6, the blocking block 9, and the connecting portion 10). After the working medium flows through the heat transfer structure 42, it can then flow along the direction of arrow C through the opening 11A (located below the pump 5) jointly defined by the flow guide frame 6, the blocking block 9, and the connecting portion 10, and be sucked upward by the fan blade 53 (not shown in the figure) into the drainage space 72 (not shown in the figure). This design of forming the flow guide frame 6 and the blocking block 9 into one piece by means of the connecting portion 10 can reduce the cost of mold development, simplify the overall structure of the water cooling head 1, and facilitate the assembly of the flow guide frame 6 and the blocking block 9.

[0122] For other embodiments of the flow guiding structure of the present invention, as Figure 9 shown, the flow guiding structure can be completed by a convex block structure 29 directly extending downward from the housing 2 to the heat transfer structure 42. The convex block structure 29 can extend to a position close to the top end of the heat transfer structure 42. Therefore, when the working medium flows in the heat absorption space 71, it is forced to flow into the interior of the heat transfer structure 42 due to the obstruction of the convex block structure 29, and finally can also perform the same function as the aforementioned flow guide frame 6. Additionally, as Figure 10As shown, the flow guiding structure can also be completed by making the height of the heat transfer structure 42 close to the inner side of the housing 2. For example, the fin heights of the heat transfer structure 42 can be different. The fins at the heat absorption space 71 near the water inlet passage 22 can be formed with an extended structure, and the height of the extended structure is high enough to be close to the inner side of the housing 2, while the fin height of the heat transfer structure 42 below the pump 5 can be lower to form a space for accommodating the fixing member 539 of the pump 5. Although the present invention has listed the above various different flow guiding structures, the flow guiding structures of the present invention, as long as they can make the working medium move more into the interior of the heat transfer structure 42, should be included.

[0123] With the flow guiding structure in the water cooling head of the present invention, the working medium can be effectively moved closer to the electronic components to be cooled in the space for adsorbing heat energy, for example, into the interior of the heat transfer structure 42, which can improve the problem of poor efficiency of the working medium in adsorbing heat energy. In addition, the working medium can be effectively sucked in by the pump 5, and the working efficiency of the water cooling head of the present invention can be improved. Additionally, when completing the flow guiding structure of the present invention, the mold development cost can be reduced, and different sizes of flow guiding frames 6 can be used according to the situation to compensate for the tolerance phenomenon caused during the production of the housing 2 and the heat transfer structure 42.

[0124] The above embodiments are only illustrative of the technical principles, features and technical effects of the present invention, and are not intended to limit the scope of the present invention that can be implemented. Any person skilled in the art can modify and change the above embodiments without departing from the spirit and scope of the present invention. However, any equivalent modifications and changes made by using the teachings of the present invention should still be covered by the scope of the above claims. The scope of the present invention for protection by rights should be as listed in the claims.

Claims

1. A water block, characterized in that, comprising: a housing; a base, which is combined with the housing to form an acting space for a working medium to flow therein; a heat transfer structure, which is arranged inside the base and is used to transfer the heat energy generated by a heat source in contact with the outside of the base to the working medium in the acting space through the path formed by the base and the heat transfer structure; a pump, which is arranged above the heat transfer structure and is used to divide the acting space into a heat absorption space and a drainage space to drive the working medium to flow from the heat absorption space to the drainage space; and a flow guiding structure, which is arranged in the heat absorption space to guide the flow of the working medium; wherein, the flow guiding structure includes a flow guiding frame and a blocking block, and the flow guiding frame is composed of a top and two side walls vertically extending from two ends of the top; wherein, at least a pair of guiding inclined surfaces corresponding to the edge of the heat transfer structure are provided at the edge of the top facing the heat transfer structure; wherein, the flow guiding frame is arranged above a part of the heat transfer structure to introduce the working medium, and a fixing member for accommodating the pump is arranged above another part of the heat transfer structure, and the blocking block is arranged on one side of the fixing member opposite to the flow guiding frame, and the blocking block is used to reduce the residence time of the working medium at the edge of the heat absorption space.

2. The water block according to claim 1, characterized in that, a groove is formed around the heat transfer structure arranged inside the base for the two side walls to be clamped into the groove.

3. The water block according to claim 2, characterized in that, the groove has a positioning recess, and the side wall has a positioning protrusion for being clamped in the positioning recess.

4. The water block according to claim 3, characterized in that, the setting directions of the positioning recess and the positioning protrusion are perpendicular to the flow direction of the working medium.

5. The water block according to claim 2, characterized in that, the blocking block includes a top piece and two side columns vertically extending from two ends of the top piece, and the two side columns are clamped in the groove.

6. The water block according to claim 5, characterized in that, the groove has a positioning recess, and the side column has a positioning protrusion for being clamped in the positioning recess.

7. The water block according to claim 6, characterized in that, the setting directions of the positioning recess and the positioning protrusion are perpendicular to the flow direction of the working medium.

8. The water block according to claim 5, characterized in that, at least one guiding inclined surface is formed on the side of the top piece of the blocking block facing the inside of the base and adjacent to the heat transfer structure.

9. The water block according to claim 1, characterized in that, the flow guiding frame is connected to the blocking block through at least one connecting part, and the flow guiding frame, the blocking block and the connecting part jointly define an opening located below the pump.

10. The water block according to claim 9, characterized in that, the flow guiding frame, the blocking block and the connecting part are integrally formed.

11. The water block according to claim 1, characterized in that, at least one notch is provided at the edge of the top facing the heat transfer structure.

12. The water block according to claim 1, characterized in that, at least one boundary layer destruction structure for reducing the flow pressure of the fluid is provided on the inner side of the top facing the heat transfer structure.

13. The water block according to claim 12, characterized in that the formation direction of the boundary layer disruption structure is perpendicular or horizontal to the flow direction of the working medium.

14. The water block according to claim 12, characterized in that the boundary layer disruption structure is a groove.

15. A water block, characterized in that comprising: a heat absorption space for the working medium to flow therein; a heat transfer structure disposed on the base and located in the heat absorption space for transferring the heat energy generated by the heat source in contact with the base to the working medium; and a flow guiding structure disposed above a part of the heat transfer structure and located in the heat absorption space for guiding the flow of the working medium; wherein the flow guiding structure includes a flow guiding frame and a blocking block, the flow guiding frame includes a top and two side walls vertically extending from two ends of the top; wherein, the edge of the top facing the heat transfer structure has at least a pair of guiding inclined surfaces corresponding to the edge of the heat transfer structure; wherein, the flow guiding frame is disposed above a part of the heat transfer structure to introduce the working medium, and a fixing member is disposed above another part of the heat transfer structure, the blocking block is disposed on a side of the fixing member opposite to the flow guiding frame, and the blocking block is used to reduce the residence time of the working medium at the edge of the heat absorption space.

16. The water block according to claim 15, characterized in that a groove is formed around the heat transfer structure.

17. The water block according to claim 16, characterized in that the two side walls are engaged in the groove.

18. The water block according to claim 17, characterized in that the blocking block includes a top member and two side columns vertically extending from two ends of the top member, and the two side columns are engaged in the groove.

19. The water block according to claim 18, characterized in that the groove has a first positioning recess for engaging the first positioning protrusion of the side wall, and a second positioning recess for engaging the second positioning protrusion of the side column.

20. The water block according to claim 19, characterized in that the setting direction of the first positioning recess and the first positioning protrusion is perpendicular to the flow direction of the working medium, and the setting direction of the second positioning recess and the second positioning protrusion is perpendicular to the flow direction of the working medium.

21. The water block according to claim 18, characterized in that the side surface of the top member has at least one guiding inclined surface.

22. The water block according to claim 18, characterized in that the flow guiding frame is connected to the blocking block through at least one connecting portion.

23. The water block according to claim 22, characterized in that the flow guiding frame, the blocking block and the connecting portion are integrally formed.

24. The water block according to claim 17, characterized in that the edge of the top has at least one notch.

25. The water block according to claim 17, characterized in that at least one boundary layer disruption structure is provided on the inner side of the top.

26. The water block according to claim 25, characterized in that the formation direction of the boundary layer disruption structure is perpendicular or horizontal to the flow direction of the working medium.

27. The water block according to claim 25, characterized in that the boundary layer disruption structure is a groove.

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